| THESTOA | Location where 51D of Citium taught, and the origin of the name for his followers |
| STOA | Where Zeno of Citium taught |
| ALPHA | The first Greek letter that, with the second letter "beta", forms the origin of the name given to a system of letters we use to write (5) |
| DEMIJOHN | French dame-jeanne is thought to be the origin of the name of what large bulbous bottle? (8) |
| RIVER | First word of the name for a group of six species of primarily freshwater dolphins of south-central Asia, China, and South America and in the coastal waters of Brazil, Argentina, and Uruguay. (5) |
| PAM | From Greek for "beloved of all" and the origin of a word for a leaflet, the jack/knave and highest card in the nap-like game loo/lanterloo (3) |
| TINTORETTO | Artist born Jacopo Comin who painted Finding of the Body of St Mark and The Origin of the Milky Way (10) |
| NORSE | Like the origin of the names for some days of the week |
| EVOLUTION | Biological process described in Charles Darwin's The Descent Of Man and The Origin Of Species |
| DZHO | One spelling of the name for a sterile male hybrid of a yak and a cow |
| NILGAU | One spelling of the name for the large grey Indian antelope Boselaphus tragocamelus |
| STOIC | Term, from the Greek name of the Painted Portico, for a disciple of Zeno of Citium, such as the boxer Cleanthes, ex-slave Epictetus, favourite Perseus or champion runner Chrysippus, who laughed himsel |
| BUDGET | A pouch or wallet originally, later the Chancellor of the Exchequer's annual statement, hence the showing of a battered red box as a gesture to the origin of the word in question (6) |
| FANFARE | Provided by the star for his followers with much trumpeting, perhaps? (7) |
| LAPLACE | French mathematician who worked on probability and the origins of the solar system |
| ADAMS | Astronomer who explained the origin of the Leonid meteor swarms, described the motion of the Moon and independently calculated Neptune's position, by mathematical rather than observational means (5) |
| KHARTOUM | Sudanese city where General Gordon met a sticky end in the 1880s at the hand of the Mahdi and his followers |
| ATHENS | In legend, a messenger ran about 40km from the town of Marathon to where, the feat said to be the origin of the marathon running event? (6) |
| BIRTHPLACE | The only place for new deliveries of The Origin of the Species (10) |
| ENGELS | Author of 1884's "The Origin of the Family, Private Property and the State" |
